napa reporting a 9 miles per hour breeze, oakland 9, s f oh 10, mountain view 8 w. the chilly temperatures already being felt, any little bit of wind will actually trigger that windchill. so 45 in napa but with a light breeze it probably feels more like 39. 45 in concord, 44 in livermore, widespread 40s to near 50 in and around san francisco. oakland, san jose reporting 49. this is just the beginning. sunset just an hour ago. we will continue to cool into the overnight hours. patchy frost expected tonight. freezing temperatures. by 11:00 or so i expect mid-30s to near 40 degrees around the bay area. mostly sunny for tomorrow. we do have the frost advisory as well as the freeze warning for parts of the bay area until about 9:00. the afternoon, widespread 50s. we do have a spare the air day again for tomorrow. the our extended forecast going to be mainly dry. with the conditions in place, the clear skies, the very cold weather right at the surface, we get that inversion right over, and the warmer air on top of the colder air contributes to the poor air quality. so esp